Astronomical outlook for this week

Weather
stars_1539635798552.jpeg

Highlights

  • The Orionid meteor shower peaks this weekend, Oct 21 into the 22nd. 15-20 meteors per hour are expected. The best time to see meteors is in the hours between moonset and sunrise. Sourced from dust left by Halley’s Comet as it passes through every 75-ish years.
  • The Orionids appear to radiate from the constellation Orion the Hunter, from a spot near his raised elbow.
  • Tue Oct 16 14:01:39: first quarter moon
  • Wed Oct 24 12:45:11: full moon

Near Earth Objects (NEO)

lunar distance (LD) is the mean distance to the moon ~239k miles. Anything within 1 LD is newsworthy. For more information see NASA’s Center for Near Earth Object Studies

This week

object

close approach date

uncertainty

LD

million
miles

2018 TU4

2018-10-15 14:13Z

< 1 sec

14.2

~3.55

2018 SL3

2018-10-15 14:36Z

< 1 sec

9.0

2+

2018 TS1

2018-10-15 14:45Z

< 1 sec

6.6

~2

2018 TZ2

2018-10-16 21:37Z

< 1 sec

9.0

2+

2014 US7

2018-10-17 16:05Z

~4 hours

3.1

<1

2013 UG1

2018-10-18 02:45Z

< 1 sec

10.4

~2.55

2016 GC221

2018-10-18 14:42Z

~7 hours

8.7

~2

2018 TT5

2018-10-24 20:26Z

~1 hour

15.8

<4

Closest

within

object

close approach date

uncertainty

lunar distances

million
miles

~14 days

2014 US7

2018-10-17 16:05Z

~4 hours

3.1

<1

~1 year

2015 EG

2019-03-04 20:52Z

1+ hour

1.2

~0.55

~100 years

2010 RF12

2095-09-06 00:03Z

<2 hours

0.1

~15,290.55 miles

Planet visibility

body (phase)

rise

transit (alt)

set

constellation

Mercury (89%)

08:51:16

14:00:35 (34??)

19:08:58

Libra

Venus (4%)

09:08:56

13:52:41 (28??)

18:36:41

Virgo

Moon (34%)

13:42:38

18:34:52 (28??)

22:38:38

Sagittarius

Mars

15:49:18

20:39:50 (30??)

01:31:55

Capricornus

Saturn

13:13:51

17:52:36 (27??)

22:35:01

Sagittarius

Jupiter

10:10:45

15:07:49 (31??)

20:04:49

Libra

Sample rise/set times for 10/15/18

Satellite Passes

This information is best used to identify passes worth sharing or skipping. Those nearest overhead are closest, brightest, and longest. Check dates and times for each pass before your share.

International Space Station (ISS)

  • below trees pass begins Thu 2018-10-25 06:31:57 EDT from the S (175°) reaches 17°, lasts 4 minutes

Atmospheric drag and other factors can and does cause orbits to change. See the European Space Agency supported Heavens Above for the latest pass predictions. Satellite pass gradings are based on altitude reached and duration of the pass. Higher altitude passes are closer to the observer and generally brighter as a result. Satellites other than ISS are much more difficult to spot.

Moon Phases

date

phase

Tue 2018-10-16 14:01:39

first quarter

Wed 2018-10-24 12:45:11

full

Wed 2018-10-31 12:40:18

last quarter

Wed 2018-11-07 11:02:03

new

Sun

Sunrise/set

Date

Rise

Solar noon (alt)

Set

sunlight

Mon 2018-10-15

07:25

12:59 (40.85??)

18:34

11 hrs 8 min

Tue 2018-10-16

07:26

12:59 (40.48??)

18:32

11 hrs 6 min

Wed 2018-10-17

07:27

12:59 (40.11??)

18:31

11 hrs 3 min

Thu 2018-10-18

07:28

12:59 (39.75??)

18:29

11 hrs 1 min

Fri 2018-10-19

07:29

12:59 (39.39??)

18:28

10 hrs 58 min

Sat 2018-10-20

07:30

12:58 (39.03??)

18:26

10 hrs 56 min

Sun 2018-10-21

07:31

12:58 (38.67??)

18:25

10 hrs 53 min

Mon 2018-10-22

07:32

12:58 (38.32??)

18:23

10 hrs 51 min

Tue 2018-10-23

07:33

12:58 (37.97??)

18:22

10 hrs 48 min

Wed 2018-10-24

07:35

12:58 (37.62??)

18:21

10 hrs 46 min

  • lost 0:22:50 (hh:mm:ss) of daylight over this period
  • daylight (HH:MM): 10:57
  • mean: sunrise 07:30 sunset 18:28
  • max: sun angle 40.85??

Twilight

date

rise

set

Mon 2018-10-15

05:52

20:05

Tue 2018-10-16

05:53

20:04

Wed 2018-10-17

05:54

20:02

Thu 2018-10-18

05:55

20:01

Fri 2018-10-19

05:56

19:59

Sat 2018-10-20

05:57

19:58

Sun 2018-10-21

05:58

19:57

Mon 2018-10-22

05:59

19:55

Tue 2018-10-23

06:00

19:54

Wed 2018-10-24

06:01

19:53

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